< cpp‎ | numeric
Defined in header <bit>
template< class T >
constexpr bool ispow2(T x) noexcept;
(since C++20)

Checks if x is an integral power of two.

This overload only participates in overload resolution if T is an unsigned integer type (that is, unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long, or an extended unsigned integer type).

Return value

true if x is an integral power of two; otherwise false.